The change in Earth’s human population growthwithin recent decades. Concept introduction: “ Population growth rate ” refers to the change in population over a time and the number of individuals in a population increases in a certain period. In the recent centuries, the human population has grown exponentially. There were approximately 500 million people who occupied the earth in 1650. And within the next couple of centuries, the population doubled. And it doubles again before the early half of the 19th century. The human population of the earth was around 6.6 billion by the end of the 20 th century. Pictorial representation: Fig. 1: Growth rate of human population in recent decades

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Chapter 53.6, Problem 2CC

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To discuss: The change in Earth’s human population growthwithin recent decades.

Concept introduction:“Population growth rate” refers to the change in population over a time and the number of individuals in a population increases in a certain period. In the recent centuries, the human population has grown exponentially. There were approximately 500 million people who occupied the earth in 1650. And within the next couple of centuries, the population doubled. And it doubles again before the early half of the 19th century. The human population of the earth was around 6.6 billion by the end of the 20^th century.

Pictorial representation:

Fig. 1: Growth rate of human population in recent decades

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